UruDendro2, a public dataset of 53 cross-section images and manual annual ring delineations of Pinus taeda L.
Description
If you use this dataset please cite the DeepCS-TRD manuscript.
Method
Image and annotations can be inspected using the TRAS tool developed during the project.
1) Open TRAS
2) Open Image
3) File>Load Annotations
Harvest Site
The samples were collected in Curticeiras, Department of Rivera, Uruguay, during 2022 (18 samples) and 2023 (35 samples) as part of a harvesting operation managed by a local lumber company. The sampling locations correspond to the following coordinates: 31°17'45" S, 55°41'42" W; 31°10'4" S, 55°39'42" W (18 samples); and 31°01'11.37" S, 55°31'55.81" W (35 samples). In total, 53 cross-section samples were obtained.
The site is classified under the CONEAT 7.31 group and is characterized by being located on the Tacuarembó Sandstone geological formation. It presents slopes ranging from 6% to 10%, very good drainage, and deep soils reaching up to 180–200 cm in the B horizon.
Image Acquisition
The UruDendro1 collection was expanded with 53 new images captured under laboratory conditions using an iPhone 6S (12 MP RGB sensor) positioned at a distance of 43 to 51 cm from the wood cross-section, and illuminated with a 35 W LED ring light. The surface preparation of the samples varied: some were cut using a chainsaw, others were smoothed with a handheld planer, and several were further polished with a rotary sander. All images were acquired indoors. The image widths range from a minimum of 2267 pixels to a maximum of 3024 pixels.
Sample codes follow the structure:
XY
Where X denotes the diameter class to which the disc belongs (A, B, or C; see table), and Y corresponds to the sample identifier.
| Class A | Class B | Class C |
| 35-40 cm | 40.1-45 cm | 45.1-50 cm |
Annotation Details
The software tool used to generate the annotations was Labelme , which produces closed polygons defined by a set of vertices. We worked with two types of annotations:
those corresponding to annual ring boundaries or earlywood–latewood boundaries, and those corresponding to reaction wood.
Table of contents
File structure
In general, the file structure for each collection goes as follows:
- images/ - Folder with the image samples
- images_no_background/ - Folder with the images after the background has been removed
- annotations/
– annual_rings/ - Annual ring annotations
– earlywood_latewood/ - Earlywood-Latewood boundary annotations
– reaction_wood/ - Reaction wood annotations - pith_location.txt - file with the pith pixel location for each image
Where each sample has a unique code. For example, sample F02c has five different files:
- images/F02c.jpg
- images_no_background/F02c.jpg
- annotations/annual_rings/F02c.json
- annotations/earlywood-latewood/F02c.json
- annotations/reaction_wood/F02c.json
Files
UruDendro2.zip
Files
(256.5 MB)
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md5:355c58988df94e724600f671c1afec6a
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